:root {
  --bg: #0f1220;
  --panel: #171b2e;
  --panel-soft: #202641;
  --text: #edf2ff;
  --muted: #a7b4df;
  --accent: #6fa8ff;
  --good: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top, #1a2040, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 12px;
}

h1 {
  margin: 0 0 8px;
  font-size: 30px;
}

.subtitle {
  margin: 0 0 14px;
  color: var(--muted);
}

.cart-visual-wrap {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 12px;
}

.cart-visual {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 120px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid #4a5589;
  background: linear-gradient(135deg, #28315a, #1f274a);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.cart-visual.bump {
  animation: basket-bump 360ms ease-out;
}

@keyframes basket-bump {
  0% {
    transform: translateY(0) scale(1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  }
  35% {
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 0 0 2px rgba(111, 168, 255, 0.38), 0 14px 28px rgba(0, 0, 0, 0.35);
  }
  100% {
    transform: translateY(0) scale(1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  }
}

.basket-icon {
  font-size: 20px;
}

.basket-text {
  color: #d8e6ff;
  font-weight: 600;
}

.basket-count {
  margin-left: auto;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #0b1120;
  background: linear-gradient(135deg, #fcd34d, #fb923c);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(130px, 1fr));
  gap: 10px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid #2e375f;
  border-radius: 12px;
  padding: 12px;
}

.stat-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.stat-card strong {
  font-size: 22px;
}

.actions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  background: var(--accent);
  color: #0c1020;
  font-weight: 700;
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid #3c4675;
}

.layout {
  max-width: 1200px;
  margin: 8px auto 0;
  padding: 0 16px 20px;
  display: grid;
  grid-template-columns: 2.1fr 1fr;
  gap: 14px;
}

.goods-panel,
.cart-panel {
  background: var(--panel);
  border: 1px solid #2e375f;
  border-radius: 14px;
  padding: 14px;
}

.goods-panel h2,
.cart-panel h2 {
  margin-top: 0;
}

.hint {
  color: var(--muted);
  margin-top: -4px;
}

.goods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}

.good-item {
  position: relative;
  color: var(--text);
  background: var(--panel-soft);
  border: 1px solid #38406c;
  border-radius: 12px;
  padding: 12px 10px 10px;
  cursor: pointer;
  text-align: left;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.good-item:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.good-item.active {
  border-color: #8fb9ff;
  box-shadow: 0 0 0 2px rgba(111, 168, 255, 0.3), 0 0 20px rgba(111, 168, 255, 0.25);
}

.good-item .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 8px;
  border-radius: 8px;
  background: rgba(111, 168, 255, 0.18);
  font-size: 18px;
}

.good-item .name {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #f2f6ff;
}

.good-item .price {
  color: #cfe2ff;
  font-weight: 600;
}

.qty-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  min-width: 22px;
  height: 22px;
  border-radius: 999px;
  padding: 0 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #0b1120;
  background: linear-gradient(135deg, #fcd34d, #fb923c);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35);
}

.qty-badge.hidden {
  display: none;
}

.fly-icon {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  font-size: 20px;
  transform: translate(-50%, -50%);
}

.cart-list {
  margin: 0;
  padding: 0;
  list-style: none;
  max-height: 430px;
  overflow: auto;
}

.cart-list li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px dashed #3a436f;
  font-size: 14px;
}

.empty {
  color: var(--muted);
  padding: 12px 0;
}

.result-box {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  background: #1f2647;
  border: 1px solid #4a5589;
}

.result-box h3 {
  margin: 0 0 6px;
}

.result-box p {
  margin: 0;
  line-height: 1.6;
}

.footer {
  text-align: center;
  color: var(--muted);
  padding: 10px 16px 18px;
}

.over {
  color: var(--good);
}

.near {
  color: var(--warn);
}

.low {
  color: var(--danger);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .cart-visual-wrap {
    justify-content: flex-start;
  }
}